How Often Should You Get Blood Tests? A Guide by Age

One of the most common questions we hear at Yearly is: "How often should I actually get blood tests?" The answer depends on several factors — your age, family history, existing health conditions, and whether you’re taking a reactive or proactive approach to your health. For most Australians, annual blood testing is an excellent baseline, but the specifics change as you move through different life stages.

In Australia, the Royal Australian College of General Practitioners (RACGP) provides clinical guidelines for health assessments and screening. However, these recommendations are often designed to detect disease rather than optimise health. If your goal is longevity and peak performance, a more frequent and comprehensive testing schedule may be appropriate.

Ages 18–29: Establishing Your Baseline

Young adults are often the group least likely to get blood tests, yet this is precisely the time to establish baseline values. Understanding where your biomarkers sit when you’re healthy provides an invaluable reference point for future comparison. At minimum, adults in this age group should consider a comprehensive blood test every two years.

Key tests to include: full blood count (FBC), iron studies, vitamin D, fasting glucose, lipid panel, and thyroid function (TSH). If you have a family history of conditions such as diabetes, heart disease, or autoimmune disorders, annual testing is advisable. A study in the British Medical Journal highlighted that early detection of cardiovascular risk factors in young adults significantly improves long-term outcomes (Loria et al., 2007).

Ages 30–39: Monitoring Metabolic Health

The thirties are when metabolic changes begin to take hold. Insulin sensitivity starts to decline, body composition shifts, and stress-related hormonal changes become more apparent. Annual blood testing is recommended for this age group, with a focus on metabolic markers.

In addition to the baseline tests above, men and women in their thirties should include HbA1c, fasting insulin, liver function tests (LFTs), and a hormonal panel. For women, this may include oestrogen, progesterone, and follicle-stimulating hormone (FSH). For men, total and free testosterone along with SHBG are important additions. Research has shown that metabolic dysfunction often begins a decade or more before a formal diabetes diagnosis (Tabák et al., 2012).

Ages 40–49: The Critical Decade

This is the decade where proactive health monitoring pays the greatest dividends. Cardiovascular risk escalates, hormonal changes accelerate, and cancer screening becomes relevant. Annual comprehensive blood testing is strongly recommended — and biannual testing (every six months) is ideal for those with identified risk factors or those pursuing optimisation goals.

Key additions at this stage include high-sensitivity C-reactive protein (hs-CRP) as a marker of systemic inflammation, kidney function tests (eGFR and creatinine), and homocysteine levels. Men should discuss PSA testing with their GP, particularly if there is a family history of prostate cancer. Women approaching perimenopause should track hormonal markers more frequently to understand their transition (Harlow et al., 2012).

The RACGP recommends cardiovascular risk assessment for all adults aged 45 and over (or 35 for Aboriginal and Torres Strait Islander peoples). This assessment relies heavily on blood test data, making regular testing essential for informed clinical decisions.

Ages 50–59: Deepening Your Surveillance

By your fifties, the cumulative effects of ageing are often measurable in blood work. Bone health, cognitive function, and immune resilience all become areas of focus. Annual testing remains the minimum standard, with biannual testing recommended for those managing chronic conditions.

Additional markers to consider include vitamin B12 and folate (particularly important for cognitive health), a comprehensive metabolic panel, and cancer markers where clinically indicated. Women who have entered menopause should continue monitoring hormonal levels to guide any hormone replacement therapy decisions. A large-scale study published in The Lancet demonstrated that regular health checks including blood work reduced mortality from chronic diseases in middle-aged adults (Krogsbøll et al., 2012).

Ages 60 and Beyond: Comprehensive Annual Reviews

For Australians over 60, comprehensive annual blood testing is essential. The focus shifts toward managing existing conditions, preventing complications, and maintaining quality of life. Kidney function, liver health, blood glucose control, and inflammatory markers should all be monitored regularly.

Full blood counts become particularly important for detecting anaemia, which is common in older adults and can significantly impact energy and cognitive function. Thyroid function should be assessed annually, as hypothyroidism prevalence increases with age. Additionally, vitamin D and calcium levels should be tracked to support bone health and reduce fracture risk.

Special Considerations

Regardless of age, certain circumstances warrant more frequent testing. These include:

• Starting or changing medications (especially statins, thyroid medication, or hormone therapy)
• Significant lifestyle changes (new exercise programmes, major dietary shifts, or weight loss)
• Pregnancy or preconception planning
• Recovery from illness or surgery
• Family history of hereditary conditions such as haemochromatosis or familial hypercholesterolaemia

The Yearly Approach

At Yearly, we advocate for at least annual comprehensive blood testing for all adults, with the understanding that more frequent testing leads to richer data and better health decisions. Our platform makes it easy to upload your results, track changes over time, and receive AI-powered insights tailored to your age and health profile. By building a longitudinal picture of your biomarkers, you can detect trends early and take action before problems escalate.

Your blood tells a story about your health. The question is whether you’re listening often enough to hear it.

References

1. Loria, C.M., et al. (2007). "Early Adult Risk Factor Levels and Subsequent Coronary Artery Calcification." Journal of the American College of Cardiology, 49(20), 2013–2020.
2. Tabák, A.G., et al. (2012). "Prediabetes: A High-Risk State for Diabetes Development." The Lancet, 379(9833), 2279–2290.
3. Harlow, S.D., et al. (2012). "Executive Summary of the Stages of Reproductive Aging Workshop + 10." The Journal of Clinical Endocrinology & Metabolism, 97(4), 1159–1168.
4. Krogsbøll, L.T., et al. (2012). "General Health Checks in Adults for Reducing Morbidity and Mortality from Disease." Cochrane Database of Systematic Reviews, 10, CD009009.